Rat dissection - digestive system and body cavities Flashcards
For food to be able to pass along the gastrointestinal (GI) tract, the correct order of the organs is:
a) trachea - oesophagus - stomach - liver - small intestine - caecum - colon - anus
b) oesophagus - stomach - small intestine - caecum - colon - rectum - anus
c) oesophagus - stomach - spleen - small intestine - caecum - colon - rectum - anus
d) oesophagus - trachea - stomach - spleen - small intestine - caecum - rectum - anus
e) oesophagus - stomach - small intestine - colon - caecum - rectum - anus
b) oesophagus - stomach - small intestine - caecum - colon - rectum - anus
The duodenum receives material from which three organs?
stomach, liver & pancreas
The peritoneal, pleural and pericardial cavities of the rat share all of the following characteristics, EXCEPT:
a) they allow internal organs to move without friction
b) there is one of each of them
c) they are ventral in position
d) they contain a small volume of fluid
e) they have visceral and parietal surfaces
b) there is one of each of them - as there are two pleural cavities
dual purpose glands secreting an alkaline digestive juice containing enzymes and endocrine cells which secrete hormones
the pancreas and liver
When you started your rat dissection, the first serous membrane which you cut with scissors was the:
parietal peritoneum
During the rat dissection laboratory you learned the location of various organs within the thorax and abdomen. In the list of organs which follow, four are located close together and one is remote. Which is the remote organ?
a) stomach
b) spleen
c) pancreas
d) liver
e) caecum
e) caecum
During your rat dissection lab, which of the following structures had the most vascular appearance?
spleen
Which of the following structures are you most likely to find in the rat?
a) canine teeth
b) gall bladder
c) bulbous uterus
d) vermiform appendix
e) adrenal gland
a) canine teeth
Which organ is NOT associated with the digestive system?
d) spleen. its part of the lymphatic system.
Identify the organ that is NOT associated with the peritoneum in the Rat.
a) mesentery tissue
b) pancreas
c) gall bladder
d) kidney
e) bladder
gall bladder
rats do not have a gall bladder.
During a rat dissection, a student encounters a tubular part of the gut. The student observes that most of this tubular section lies outside the abdominal cavity, and she is told that transport is the main function of the section. Little absorption or secretion occurs there. Which of the following statements about the tube is also correct?
a) it is held open by rings of cartilage
b) it is not connected to either the stomach or the caecum
c) it is convoluted or coiled
d) over most of its length it is suspended from the dorsal body wall by a mesentery
e) it does not receive secretions from either the liver or the pancreas
e) it does not receive secretions from either the liver or the pancreas
Which of the following statements about the rat liver is correct?
a) Like the stomach and intestine, its blood supply is entirely from systemic arteries.
b) It has a tough fibrous connective tissue capsule.
c) Its ducts (hepatic ducts) join the small intestine downstream of the pyloric sphincter.
d) In life it is similar in colour to fat.
e) Most of the liver lies on the same side of the body as the pancreas.
Its ducts (hepatic ducts) join the small intestine downstream of the pyloric sphincter.
Everyone in your lab stream completed their Scantron forms perfectly and you were all awarded a yummy Fruit Burst lolly at the end of the lab. The structure which prevents you from choking from the Fruit Burst lolly is called the:
d) epiglottis
what are the three regions of the small intestine?
duodenum, jenunum, ileum
how is the small intestine attached to the dorsal wall?
by a transparent mesentery which is actually a double-layer of peritoneum
